WO2014012159A1 - Commande multimode d'un convertisseur à résonance en pont complet - Google Patents

Commande multimode d'un convertisseur à résonance en pont complet Download PDF

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Publication number
WO2014012159A1
WO2014012159A1 PCT/CA2012/000922 CA2012000922W WO2014012159A1 WO 2014012159 A1 WO2014012159 A1 WO 2014012159A1 CA 2012000922 W CA2012000922 W CA 2012000922W WO 2014012159 A1 WO2014012159 A1 WO 2014012159A1
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WO
WIPO (PCT)
Prior art keywords
switches
network
switch
controller
resonant
Prior art date
Application number
PCT/CA2012/000922
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English (en)
Inventor
Damien FROST
Original Assignee
Frost Damien
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Frost Damien filed Critical Frost Damien
Priority to US14/415,680 priority Critical patent/US20150180345A1/en
Publication of WO2014012159A1 publication Critical patent/WO2014012159A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/337—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration
    • H02M3/3376—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in push-pull configuration with automatic control of output voltage or current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H02M1/0054—Transistor switching losses
    • H02M1/0058—Transistor switching losses by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • At least some example embodiments relate to the field of power converters, for example switching resonant converters.
  • Some conventional control systems for switch mode power supplies involves measuring output voltages and/or currents, comparing those measured values to the desired ones, and adjusting the control signals as required to regulate the resultant output.
  • SMPS switch mode power supplies
  • Such methods control the control signals by a single control algorithm, or function.
  • the output voltage is compared to a reference value to create an error signal.
  • This error signal is processed through a single transfer function, or compensator which serves as the single control algorithm. The output of this function yields a signal to control the switches.
  • a full bridge switching configuration of a resonant converter typically includes four switches configured in an H-bridge.
  • a single control algorithm is used which varies the switching frequency of the switching network based on feedback from the output voltage measurement.
  • such systems may have limited operational flexibility, and may not provide optimal power efficiency at some power levels.
  • Some conventional systems can operate the full bridge configuration in a half bridge mode (e.g. driving using only two of the switches). In order to do so, such systems may require two filter capacitors, each in parallel with one switch on the same switching leg of the H-bridge. These capacitors are used to prevent a DC current from accumulating in the resonant network. However, such systems can require additional capacitor components in the switching.
  • Another difficulty which can arise is the action of transitioning between any two modes of operation. During one of these transitions, a disturbance may arise at the regulated output due to this abrupt mode change. Smoother signaling may be desired.
  • the resonant converter network includes a switching network, a resonant network, an output rectifier network, and a controller.
  • the switching network includes a first set of switches and a second set of switches in parallel with the first set of switches, each set of switches including a first switch and a second switch.
  • a controller is configured to: receive feedback input signals and provide output signals to the switching network. In the half bridge operating mode, the controller will provide output signals to one set of switches based on the received feedback input signals, and provide output signals to the other set of switches to maintain an active signal state of the first switch and to maintain an inactive signal state of the second switch.
  • the operating modes include at least one of: full bridge converter operating as a full bridge converter mode, full bridge converter operating as a half bridge converter mode, shutting down a phase, and a resonant current interrupting mode.
  • the resonant current interrupting mode further includes operation of a voltage controllable switch within the resonant network.
  • a non-transitory computer readable medium having instructions stored thereon executable by a controller for controlling a resonant converter network, the resonant converter network including a switching network, the switching network including a first set of switches and a second set of switches in parallel with the first set of switches, each set of switches including a first switch and a second switch.
  • the resonant converter network further includes a resonant network and an output rectifier network.
  • the instructions include: instructions for receiving feedback input signals, instructions for providing output signals to operate one set of switches based on the received feedback input signals, and instructions for providing output signals to the other set of switches to maintain an active signal state of the first switch and to maintain an inactive signal state of the second switch.
  • Figure 2 illustrates an example embodiment of a circuit diagram illustrating a resonant converter network for use in the system of Figure 1, in accordance with an example embodiment
  • Figure 3 illustrates an example voltage signaling diagram for
  • Figure 4 illustrates an example voltage signaling diagram for
  • Figure 5 illustrates an example graph of hysteretic control for switching between the half bridge and full bridge converter modes for the system of Figure 1;
  • Figure 7 illustrates an example table for controlling modes of the system of Figure 1, in accordance with an example embodiment
  • Figure 8 illustrates an example embodiment of a circuit diagram illustrating a multi-phase resonant converter network, for use in the system of Figure 1, in accordance with another example embodiment
  • Figure 9 illustrates an example voltage signaling diagram for the network of Figure 8.
  • Figure 10 illustrates an example flow diagram of a method for controlling a resonant converter system, in accordance with an example
  • Some exemplary embodiments generally involve operating a full bridge resonant converter network in various modes of operation, wherein at least one mode may include operating the switching network in a half bridge converter mode of operation.
  • One mode may be provided which may include removing a phase of the converter network by shutting down all of the switches for that phase of the converter network.
  • Some example embodiments relate to a controller that regulates the particular mode of operation, or control algorithm, of the resonant converter network.
  • the resonant converter network is able to operate in one of a various number of operating modes. In each mode of operation, a different control algorithm or function is used to maximize the efficiency of the converter. In addition to these controllers, another controller exists to manage which control algorithm or function should be executed in order to maximize the efficiency.
  • Figure 1 shows a resonant converter system 100 to which example embodiments may be applied.
  • the system 100 will be described as a DC-DC resonant converter system, although other circuits or networks may be
  • the system includes a resonant converter network 102 which is controlled by a controller 104.
  • the resonant converter network 102 receives power from a power source 106, such as DC voltage represented as Vin (+/-).
  • a load 108 is driven by the resonant converter network 102, typically to provide a controlled or specified voltage output or DC voltage output.
  • the controller 104 is configured to receive feedback input signals 110, and based on the received signals 110, provide output signals 112 (e.g. switching commands) to operate the switching network 114, and to operate a particular mode of the resonant converter network 102. This provides the resultant drive voltage to the load 108.
  • the controller 104 may further be configured to operate one or more phases 120 of the resonant converter network 102, shown as Phase 1, Phase n, described in greater detail herein.
  • the resonant converter network 102 includes at least a DC-AC switching network 114, a resonant network 116 (e.g. resonant tank) for receiving the AC signal from the switching network 114, and an AC-DC output rectifier network 118 for rectifying the signal from the resonant network 116.
  • This provides at least switching resonant conversion for implementing various operational modes of the system 100.
  • load voltage may be controlled based on the controlled switching frequency of the switching network 114, as would be understood in the art. It is recognized herein that some power efficiencies may be provided depending on the particular selected operational mode of the system 100.
  • the switching network 114 includes first set or pair of switches 122 (Ql, Ql') and second set or pair of switches 124 (Q2, Q2') in parallel in an H-bridge configuration.
  • switches 122, 124 may be referred to as a full bridge converter.
  • Ql and Ql' represent respective inverted signals
  • Q2 and Q2' represent respective inverted signals.
  • the switches are metal-oxide-semiconductor field- effect transistor (MOSFET), although other suitable switches may be used.
  • MOSFET metal-oxide-semiconductor field- effect transistor
  • the example output rectifier network 118 may include, for example, two output diodes and two output filtering capacitors configured for rectifying the received signal for driving the load 108.
  • Various modes may be implemented by the controller 104 by controlling at least one of the switching network 114 and the interrupt switch 128.
  • the modes include at least one of: full bridge converter operating as a full bridge converter mode, full bridge converter operating as a half bridge converter mode, and a resonant current interrupting mode.
  • the efficiency of the resonant converter network 102 may be improved by using different control modes at different input power levels.
  • the full bridge converter mode and half bridge converter mode are best illustrated in Figure 3, which illustrates an example voltage signaling diagram 200.
  • the voltage signaling diagram 200 illustrates the half bridge converter mode 202, a transition zone 204, and the full bridge converter mode 206.
  • the controller 104 is configured to provide output switching signals 112 to operate only the first set of switches 122 based on the received feedback input signals 110. For example, referring to the first set of switches 122, wherein Ql is controlled to a have a controlled duty cycle, frequency, phase shift, or pulse width, etc., while Ql' has inverted control signals with respect to Ql.
  • the controller 104 is also configured to provide output signals to maintain the state of the second set of switches 124.
  • Q2 is maintained at low inactive signal state and Q2' is maintained at high active signal state in the half bridge converter mode.
  • Q2' therefore shorts the capacitor Cr of the resonant network 116 to the power source 106 (or ground, as appropriate). This results in shutting down the switching leg provided by the second set of switches 124.
  • Q2 is always inverted from Q2'.
  • filter capacitors would not be required in the switching network 114 in some example embodiments because the resonant capacitor, Cr in the resonant network 106, will block any DC current in the resonant network 106.
  • the switching control of one or both sets of switches 122, 124 can be used to control the resultant voltage to the load 108, typically calculated by the controller 104 based on the received feedback input signals 110.
  • the frequency of the switches may be controlled to be increased or decreased, as understood in the art.
  • the pulse width of the switches may be controlled to be increased or decreased.
  • phase shifting of the switches may be controlled to be increased or decreased between each set of switches 122, 124. In this mode, instead of changing the switching frequency of the gating signals, the controller changes the phase between each set of switches 122, 124. This can result in Ql and Q2 being on at the same time, as well as Ql' and Q2'.
  • the efficiency of the resonant converter network 102 may be controlled by using different control modes in dependence of a detected control variable from one or more of the feedback input signals 110.
  • two or more feedback input signals 110 may be used.
  • the feedback input signals 110 to the controller 104 can include one or more of, for example, load properties such as voltage measurements, current measurements, power measurements, and environmental measurements such as temperature, humidity, wind speed, time, etc.
  • the same or different feedback input signals 110 may be used to operate the resonant converter network 102 within the particular mode of operation, for example to adjust the pulse frequency, etc.
  • the controller 104 determines which control mode to operate in, based on the feedback input signals 110.
  • the points at which to switch modes can be hard coded for the controller 104.
  • the controller 104 can use algorithms to correlate its most efficient operating mode with its feedback signals for all operating points. In this way, the resonant converter network 102 can operate in its most efficient operating mode at all times throughout its service life.
  • an input power level threshold may be used as the detected control variable to operate the resonant converter network 102 in a given mode.
  • it may be considered optimal to operate the converter in full bridge converter operating with e.g. frequency control.
  • the interrupt switch 128 (Qx) is constantly "on", thus appearing as a small resistor in the circuit.
  • operating the resonant converter network 102 in the interrupt mode may be suitable, by controlling the interrupt switch 128 at suitable times.
  • operating the converter as a half bridge converter may be considered optimal, by controlling only the first set of switches 122 and maintaining the state of the second set of switches 124.
  • the interrupt switch 128 (Qx) is constantly "on", thus appearing as a small resistor in the circuit.
  • Figure 7 shows an example table for controlling various modes of the system of Figure 1, based on input feedback signals 110, in accordance with an example embodiment. It would be appreciated that the actual values may vary depending on the particular application, in accordance with other example embodiments.
  • the input power is the main determining factor of which mode the converter should operate in.
  • the specified power threshold may be for a fixed base power level threshold percentage, such as 0-20% for operating in interrupt mode, 20% to 40% for half bridge converter mode, and 40%-100% for full bridge converter mode, as shown.
  • the specified power threshold may be 0 and 20 + y*T percent for operating in interrupt mode, between 20 + y*T percent and 40 + x*T percent for operating in half bridge converter mode, and between 40 + x*T percent and 100 percent for operating in full bridge converter mode.
  • FIG. 3 illustrates the transition zone 204 from the half bridge converter mode 202 to the full bridge converter mode 206.
  • the controller 104 is capable of a bump-less transition (or reduced bump transition) between operating modes of the converter.
  • the duty cycle of upper switch of the inactive half bridge, Q2 is gradually increased from 0% to 50%, completing the transition to full bridge converter mode.
  • the duty cycle may include a full bridge pulse width (50% duty cycle) at a controlled frequency.
  • the pulse width of Q2 is gradually increased from zero to the full bridge pulse width (50% duty cycle) for the full bridge converter mode 206.
  • the duty cycle of Q2' is gradually decreased to the full bridge pulse width (50% duty cycle).
  • the voltage controller or other appropriate controller, is constantly regulating its output signal to maintain a constant output.
  • the interrupt switch 128 Qx
  • the transition time may be reduced or increased depending on the application.
  • the duty cycle is linearly incremented from 0% to 50%, however it may be incremented in a non-linear fashion, depending on the application. [0048] Switching to half bridge control from full bridge control can be advantageous in low power situations.
  • the resonant converter network 102 When there is a large load, the resonant converter network 102 operates in full bridge control mode driving the resonant network 116 with - ⁇ -Vin and -Vin. When the load is reduced, less power is required to be transferred, and thus the controller 104 switches to half bridge control mode. In this mode the resonant network 116 is driven with +Vin and 0V or -Vin and 0V, effectively halving the input power. In addition, the switching losses will be halved since only half the switches will be operating.
  • the second set of switches 124 may not necessarily be the switches which are shut off in the half-bridge converter mode.
  • the first set of switches 122 may be selected to be shut off.
  • the controller 104 may be configured to selectively shut off a different half bridge of the full bridge each time it enters the half-bridge converter mode to distribute the wear and heat amongst the switching components.
  • the load may be distributed so that each set of switches 122, 124 drives the half bridge approximately 50% of the time.
  • the amount of load can be tracked and stored by the controller 104.
  • FIG 8 illustrates an example embodiment of a circuit diagram illustrating a multi-phase resonant converter network 800, for use in the system of Figure 1, in accordance with another example embodiment.
  • the resonant converter network 800 may be controlled to add or shut down one or more phases. For example, less phases may be used during low power operation.
  • the resonant converter network 800 includes at least a DC-AC switching network 802, a resonant network 804 (e.g. resonant tank), and an AC-DC output rectifier network 806.
  • the resonant network 800 includes two full-bridge resonant LLC converters connected in parallel, shown as first converter 808 and second converter 810.
  • Each converter 808, 810 may be referred to as a phase of the multi-phase configuration.
  • Each of the converters include four transistors that make up the H-bridge, a resonant network, two output diodes, and two output filtering capacitors.
  • phases 808, 810 can be turned off to increase the overall efficiency of the converter.
  • An interrupt switch (not shown) may be included in one or both converters 808, 810.
  • FIG. 9 illustrates an example voltage signaling diagram 900 for the network 800.
  • the diagram 900 shows the gating pattern used to transition from two phases 808, 810 operating in full bridge converter mode 902 to one phase 810 operating in one phase full bridge converter mode 904 to the one phase 810 operating in the one phase half bridge converter mode 906.
  • the diagram 900 also shows one example implementation of a bump less mode transition, shown as first transition zone 908 and second transition zone 910, operating in a similar manner as described above with respect to Figure 4.
  • additional phases may be added, as appropriate, each phase being a controllable half-bridge or full-bridge resonant LLC converter connected in parallel, for example up to n phases.
  • a phase may be added or shut off, depending on the detected power levels.
  • FIG. 6 illustrates an example graph 600 of efficiency 602 versus power 604 for multi-mode control 608 as per the system shown in Figures 8 and 9, as compared to a conventional resonant controller using only full bridge frequency control 606.
  • the controller 104 is able to operate in different operating modes creating the multi-mode control efficiency plot 608.
  • the converter was implemented with two phases.
  • the multi-mode control implemented by the controller 104 is able to shut down one phase of the resonant converter network 802 when the input power is low. When a phase is shut down, this allows the remaining phase to operate at a more efficient operating point. As the power 604 further decreases, the operating phase will further operate in half bridge mode to further increase the efficiency of the converter network 802.
  • a specified power level threshold may, for example, be on or about 30%. When the power is above 30%, both phases 808, 810 of the resonant converter network 802 are operated in the full bridge converter mode. When the power is below 30%, the resonant converter network 802 is operated in single phase mode, where all of the switches for one phase 808 are shut down. At another specified power level threshold, which may be on or about 10% for example, the resonant converter network will operate one phase 810 of the switching network 802 in half bridge mode when the power is below 10%.
  • the efficiency of the conventional control 606 versus multi-mode control 608 is the same for high power when both converters 808, 810 ( Figure 8) are operating at higher power levels.
  • a specified power level threshold 30% in the case shown in Figure 6, one phase is shut off.
  • a specified power level threshold 10% in the case shown in Figure 6, the remaining phase operates in half bridge converter mode.
  • the converter is moved to an operating point with higher efficiency. The result is improved efficiency at low power as shown in Figure 6.
  • the first phase 808 may not necessarily be the switches which are shut off.
  • the second phase 810 may be selected to be shut off.
  • the controller 104 may be configured to turn off a different phase 808, 810 of the two-phase system each time it enters a low power state to distribute the wear and heat amongst components. For example, the load may be distributed so that each phase 808, 810 drives the system 50% of the time, when removing a phase for lower power operation. Further, within each phase 808, 810, each set of switches can be selected to drive the respective half-bridge mode 50% of the time within the phase.
  • FIG 10 illustrates an example flow diagram of a method 1000 implemented by the controller 104 for controlling a resonant converter system, in accordance with an example embodiment.
  • the method 1000 may be configured as a loop, as shown. Other example configurations such as state-based processing may also be implemented.
  • the controller 104 receives feedback input signals.
  • the controller 104 determines a threshold of a control variable of the received feedback input signals, an example control variable being the detected power.
  • the threshold may be varied based on another received feedback input signal such as the temperature, for example.
  • the threshold may be determined or varied based on the transitioning between modes, using hysteretic control. In some example embodiments, the threshold is a fixed or hard-coded value.
  • the control variable is then compared to the determined threshold. Note that, multiple thresholds may be used depending on the number of modes.
  • the controller 104 determines which mode to operate the resonant converter system, by determining whether the control variable (e.g. power) is above or below the determined threshold. For example, the resonant converter system may be operated in full-bridge converter mode if the control variable is above the determined threshold, or operate in half-bridge converter mode if the control variable below the determined threshold.
  • the controller 104 provides output signals (e.g. switching commands or holding state commands) to operate the switching network based on the received feedback input signals (e.g. load voltage), for example to control the frequency of switching, the pulse width, the duty cycle, etc.
  • the method 1000 may be repeated, as
  • example embodiments of the system 100 have been primarily described as dc to dc, it would be appreciated that other example embodiments may be applied to (or form part of) dc to ac, ac to dc, or ac to ac power conversion systems.
  • computer readable medium includes any medium which can store instructions, program steps, or the like, for use by or execution by a computer or other computing device including, but not limited to: magnetic media, such as a diskette, a disk drive, a magnetic drum, a magneto- optical disk, a magnetic tape, a magnetic core memory, or the like; electronic storage, such as a random access memory (RAM) of any type including static RAM, dynamic RAM, synchronous dynamic RAM (SDRAM), a read-only memory (ROM), a programmable-read-only memory of any type including PROM, EPROM, EEPROM, FLASH, EAROM, a so-called "solid state disk", other electronic storage of any type including a charge-coupled device (CCD), or magnetic bubble memory, a portable electronic data-carrying card of any type including COMPACT FLASH, SECURE DIGITAL (SD-CARD), MEMORY STICK, and the like; and optical media such as a Compact Disc (CD), Digital Versa

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

Systèmes et procédés de fonctionnement d'un réseau de convertisseurs à résonance en pont complet selon divers modes de fonctionnement, au moins un mode pouvant comprendre un fonctionnement de convertisseur en demi-pont. Le réseau de convertisseurs à résonance comprend un réseau de commutation, un réseau de résonance, un réseau redresseur de sortie et un dispositif de commande. Le dispositif de commande est conçu pour recevoir des signaux d'entrée de rétroaction et pour fournir des signaux de sortie pour faire fonctionner le convertisseur dans son mode de fonctionnement le plus efficace. Dans le mode de fonctionnement en demi-pont, le dispositif de commande peut fournir des signaux de sortie à un ensemble de commutateurs sur la base des signaux d'entrée de rétroaction reçus et fournir des signaux de sortie à un autre ensemble de commutateurs, de façon à maintenir un état de signal actif d'un premier commutateur et à maintenir un état de signal inactif d'un deuxième commutateur.
PCT/CA2012/000922 2012-07-19 2012-10-04 Commande multimode d'un convertisseur à résonance en pont complet WO2014012159A1 (fr)

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US201261673370P 2012-07-19 2012-07-19
US61/673,370 2012-07-19

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